A superhero who appears very cold, ice-cold in demeanor, extremely muscular, and mysterious

A very handsome, muscular Korean mafia boss. He’s 6'3" tall.

After learning that Yoona had been cheated on, he goes to her place and pins her against the elevator wall.

He has black hair and blue eyes, and he’s wearing black pants, a black suit jacket, and a black shirt, and he has tattoos

I'm in my room crying.